Journal of Geological Research / 2009 / Article / Fig 5

Research Article

Slope Stability and Slope Formation in the Flysch Zone of the Vienna Forest (Austria)

Figure 5

Landscape formation phases 2–5. First sliding phase (a): sliding of the loess surface formation on top of basal clays and marls. The figure shows the scar of landslide in 1996 in the northern Vienna Forest area. Erosional phase (b): subsequent to the sliding of loess surface formations and the erosion of landslide relics, the downwash of the basal clays and marls starts, uncovering the bedrock. Weathering phase (c): in particular sandstones, notably in the calcareous sandstones (“Mürbsandstein”), a profound decomposition proceeds due to the influence of humidity. Second sliding phase (d): the decomposed sandstone stratum is affected by further slides after exceeding a “critical mass”.

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